Animations in gif files are, for some reason I don't understand, not supported by practically every Linux image viewer I've tired. That's general image viewers I'm talking about, not specifically animated gif viewers. I think xnview is one that will display the animation, and it is available in the uci section of mydsl.

The "animate" command (part of imagemagick) will show the animation, but it is kind of crappy.

There are a few applications that are made specifically for viewing animated gifs, such as gifview, and I'm sure you can find the others with an internet search.